32221002120 has 128 divisors (see below), whose sum is σ = 98955648000. Its totient is φ = 8390419200.

The previous prime is 32221002119. The next prime is 32221002167. The reversal of 32221002120 is 2120012223.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 32221002120.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1054011 + ... + 1084149.

It is an arithmetic number, because the mean of its divisors is an integer number (773091000).

Almost surely, 2^32221002120 is an apocalyptic number.

32221002120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32221002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49477824000).

32221002120 is an abundant number, since it is smaller than the sum of its proper divisors (66734645880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32221002120 is a wasteful number, since it uses less digits than its factorization.

32221002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30363 (or 30359 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 32221002120 its reverse (2120012223), we get a palindrome (34341014343).

The spelling of 32221002120 in words is "thirty-two billion, two hundred twenty-one million, two thousand, one hundred twenty".